Oil-firing system



l Aug. 3, 192e.'

C. HERZOG oIL FIRING SYSTEM Filed April 14, 1924 5 Sheets-Sheet 5 INVENTOR C.; R4 MV? Z ac(1 Mau , ATTORNEY Patented Aug. 3, 1926. p

UNITED STATES PATENT oFElcE. I

CARL HERZOG, F HARRISON, NEW JERSEY.

orL-rInrNG SYSTEM.

Application filed April 14, 1924. Serial `o; 706,276.

lhis invention relates to improvements in to ensure a perfect combustion within .reoil firing systems on boilers for locomotives, tort 12 on account of the presence of a sutil' marine engines, stationary engines or on cient quantity of oxygen carried by the boilers for heating systems or the like. steam and present in the mixture.

It is the principal object of my invention The exhaust gases escape through pipe 60 to provide a iiring system for such boilers 16 which is in communication with the installed within the boiler itself in order to boiler 10. utilize the entire heat developed without any The vwater level within the boiler is loss caused for instance by the exhaust of indicated at 17 at about half the length of 10 the hot gases of combustion through the pipe stem 16.- It will be clear that the hot 65 stack. exhaust gases will tend to displace the water Another object of the invention is to prowithin pipe V16 and' boiler 10, and will give vide a Vfiring system of the lcharacter deup their heatto the water contained therein. scribed above which does away with the The steam thus generated will escape from 'l5 customary stack and positively prevents the the boiler throughthe elbow 18 of the steam Y70 formation of smoke or cinders, etc. dome 19 of boiler 10 and will be passed to A. further object of the invention is the the engineto be operated inthe customary provision of a boiler of this type with manner. means for automatically extinguishing the Asno steam is originally present within 20 heating flame as soon as the pressure exceeds the inner boiler 11, this boiler must be sup- 75 a certain maximum in order to pre-vent plied with auxiliary air oi' steam, andwith boiler explosions and their disastrous consethis end in view, steam o'r air under presquences. Y sure is introduced through the'condu'it 20, Further objects and advantages of t-he inwhile valve21 is closed, and valve 22 open. 25 vention will become more fully apparent as It is clear that the steam and airzunder pres- 80 the description thereof proceeds, and will sure must be supplied under a pressure of then be specifically pointed out in the apabove 2 atm., which is then automatically pended claims. reduced to suit the'purpo'se by' the pressure In the accompanying drawings forming a regulator 15. material part of this disclosure: The steam or air under pressure passes 95 Figure 1 1s a longitudinal sectional view through valve2'2,l the T-piece-23 and is then of a boiler equipped with a firing system transformed within the pressure regulator constructed according to the present inven- 15 to any. desired degree of pressure; it mixeswithln'the burner 13 with the fuel oil tion. Figure 2 is an end view of the boiler. which is supplied to the burner through the 90 Figure 3 is a transverse sectional view'o'f supplypipe 24. the same. The combustible mixture isk ignited by Figure a is a detail view ofthe burner and means of' a suitable fuse of any Well known ignition system. construction or the like introduced through 40 Figure 5 is a longitudinal vertical section the bore or opening 25, .whereupon said bore 95 through a pressure regulator. or opening is closed by any customary means Figure 6 is a front elevation of the pres'- suitable for this purpose'. sure regulator. The hot ases'y of combustion4 give their lVithin a boiler 10 of convenient type anheat up to t e retort 12 which will heatthe other boiler 11 is located, and within this water .contained within boiler 11. The ex- 100 boiler 11 the heating pipe proper or vaporhaust gases will'leave the retort through the izing retort-12 is arranged whichis heated pipe stem 16 and `during their' passage from an oil burner 13 of any well kno-wn through the water contained within boiler construction for steam operation. 10 will give up their heat to the water conto The retort 12 is arranged'to heat water tained therein whereupon they mix within 105 contained within boiler 11 and the steam the steam dome of boiler 10 with the steam generated escapes through the pipe 14C into contained therein. the pressure regulator generally indicated The steam within boiler 10 must be: alat 15. rl`he steam is then mixed within the lowed to lescape' until boiler 11 starts to op? i5 burner 13 with a sufficient quantity of oil erate or to generate its own steam in order v1- 10 to prevent the presence of a pressure surplus which would impedethe proper operation oi3 boiler ll and retort l2. i

As soon as a sufiicient quantity of steam is generated within the boiler ll, i. e. steam of more than 2 atm. pressure, the valve 2l is opened and the valve 22 is closed. 'The steam generated within boiler l1 will now pass through the pipe conduit or' valve 2l, pass the same, and T-piece 23, and will then be reduced within the pressure regulator l5 to Vthe desired degree. The steam thus reduced will mix within oil burner lwith the oil to form a perfectly combustible mixture which will b'e'combusted within the retort l2. rlhe exhaust gases escape through pipe stem 16 into the steam dome orP boiler' l0.

rlhe heating surface of boiler 1l must be llarge enough to allow the maintenance oit a higher pressure within boilerll than in boilers 10: This isy necessary because a rgreater pressure should be maintaine-d for allowing a proper working of the retort l2 and in order to allow the escape or' the hot exhaust gases from `this retort through boiler 10 without encountering any retarding or impeding resistance which would be injurious `tothe proper worxing of the system. The 'water within boiler 10 and wit-hin the pipe stem 16 will act t0 separate the flame within -retort l2' from the steam Within boiler l0.

If the pressure within boiler 10 rises above the prescribed maximum, the water will be pressed through pipe stem 16 into the retort l2 'and extinguish the flame therein, so that boiler explosions are positively prevented.

A man-hole 26 isprovided `for allowing aproper cleaning of the retort l2 and the boilers. As illustrated in Figures the. manometer for boiler 1Y0, 2S the mancineter for boiler ll. 29 is the water gage for boiler l0 and 30 that for the boiler l1. 3l indicates the steam conduit from boiler l0 to the pressure regulator l5, while 32 indicates the water level within boiler 1l, and i7 the Water level within boiler l0.

In Figures 5 and 6 a steam regulator is illustrated in longitudinal sectional viewand in front elevation res'iectively.

The steam yentersv the regulator l5 through conduit 33, and reaches thepiston chamber 34 through the openings 35, acting upon the `piston 37V to press the same downwardly. The piston rod 38 is kept in elevated position by means of a springBQ wound around the rodv and having a vpredetermined strength. If now steam pressure prevails which is greater than the compressive strength of the spring7 the piston 37 will be displaced7 the opening 35 will be partially closed, and the pressure will evidently be reduced. l 'The spring must be carefully adjusted for a predetermined degree of initial pres- 2 and 3, 27 is said retort it within the inner saell,

sure. In order to maintain ahigher pressure within the retort 12 than in boiler l0, he steam chamber 34C is provided below piston 37 which is in communication with the boiler l0 by means oi' the conduit 3l. The pressure prevailing within this chamber will assist the spring 39 by its tendency to press the piston 37 toward the top and to enlarge the operative extent of the openings 35, so that the pressure is increased and the steam leaves the conduit s'O-under a pressure greater than that prevailing in boiler lO'or plug the so-called initial pressure.

rlhe lower end of spring 39 rests upon a boss il held in place by a plugllZ within the housing i3 ant screwed into the regulator body l5, and 44: and l5 areV adjust-ing nuts permitting a regulation of theV tension of spring 39 to any desired degree.

The operation of the device will be entirely clear from the above description without any further explanation.

At will be clear that in the general construction of my device and in the construction of its minor details Vas fall within the spirit and scope of the appended claims.

Having thus described my invention, what l claim as new and desire to secure by Letters l-)atent is:

l. An oil firing system for boilers coinprising in combination with a pair of boiler shells, one spaced wholly within the other to heat the outer of said shells, of a heating retort within the inner shell, means for heating said retort.y connections between said inner shell and said heating means whereby steam generated in said inner shell is mi2-:ed with fuel oil in said heating' meansya valve in said connection for maintaining a higher pressure within the inner shell than in the outer shell to prevent extinguishing of the iame'within said retort, and means forV automatically extinguishing the flame within the pressure in the outer shell exceeds a predetermined maximum.

2. in oil firing system for boilers comprising in combination with a pair of boiler shells, one spaced wholly within the other to impart heat to theouter shell, eachV being adapted to contain water, a heating retort i burner within V'said retort, connections between the inner shell and said burner whereby steam from said inner shell may be mixed with fuel oil in said burner, means in said connection to maintain a higher pressure within the inner shell than in the outer of said shells, and means ior automatically extinguishing Vthe burner within said retort if the pressure in the outer shell exceeds a predetermined maximum.

In witness whereof I have ailixedmy signature.

CARL i-mnzoef 

